1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b0c9c452a847f5c56668ca6931ffc0a2fb162ad3bd201e40987ca34bf1183e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/532ef094-e96e-4891-86bc-87b59afda3d3.json and https://artists.proofprofile.net/proofs/artist/532ef094-e96e-4891-86bc-87b59afda3d3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6040c1bc4215375e688499496b51ad28da940a6b53380bdd854467ce0331da64. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92318752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871331017908765b60a9da810d6bcaefd62e0c99fd5c98f55b5af0492c32bd10. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92318753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906fce73e69614ddf5aa69d10666277e7413cd952e616d77c5ec3feb7aa25d3f. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92312616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029811db7637680e573e91d7468716277e9133e140bf4391d2fde03d6a0fde0c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92312617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904d628d6aac9b86aa95d8ef2c1ee71288450df6375ed23ac455b3e09ec97c27. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92312620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb372b591f32c087c7e0fc27979efba378ad0ab31a2a16086f9c45ecff31d631. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92312625.
As the Night Falls, the Razor Goes Deeper
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080a304330beac0079fbdc4b46d0c104a1107274eab8c992d14ff5c15c4d26ec. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92312626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10e57e6629f0574571d08e4e7d6b656fbf5c7c3fe68c0702a4cc69e872ff57d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92312627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f4683cbe82a52d9efe1a4f28fd967fba40313b04318c3a2144a3729aaffa95. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92322021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1b1e4fddadb5dbc2c2935375768100072545fd8c57599f478bd15f77fb4104. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92322022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e099d3073c22cba3c071a342d6d987066cf6033bf434baa61e4f645dc4eea25. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92322023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3c6d625cee8125f2517df07b90070844b349fc2146e9ddd2ec3ecea3a74d89. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92318759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7418b671c8ac782dde836ea43d57de035be3680201530cc730cb5411e5636c. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2382019.
Never Reached Dreams (Hanging Garden Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624b9306c6c8f796c9cc0cd4d840d62731fd30924c3afdb3e6160f62afdd1619. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2382022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddead792a8b0a5af19997899acd1be6a14c2080755c560f48ab16c10e49dcb3f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2382023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37eb9640bb4aa1262ab09bb5821cb6c40e2ba7c0875b63d481cad6d20bd5e563. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2382024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b36d682c0ef12af73f47f042a5ddeefe29c84f09f7f4124b2794017fc9de09. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP2382025.
Suffering Will Shroud Every Sign of Happiness
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab60cc422dede708bf982b393c5ea3d4dc5d1de8fa429523a032b8cd440e6f2. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92408021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279662901f182a5c30e221ba09e586e83e5b6aaf5019175ce1668445c6ce3dca. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92408023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa129b8d1e5273b0d3719e0a59001c9e5f7886023a13f0fc6af22b699849e74. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-02T22:12:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMA22371092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8612b6fb94c0fb4f1c65212172a850158b011f147aab42e68c26cbe8095d9d71. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMA22371093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea737cfbd840a14c6b40f31f6c63acfce69ff7f908021ff4ae8d3428b9b9235. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMA22371095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4eca67588ca79c3f13c023bab60f8e40bb223969149f6d9681f020f02b4379. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMA22371096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ca80f9c0a76620ab452c7fc6ea571285760a01b687030a9475542d453caef8. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMA22371097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee88c70b5242158085ad73ebd733f3b1a46f79433e197c142fc1f8ec0eadba5. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMA22371099.